Re: [Discuss-gnuradio] Segmentation fault

[mgray]

I built FFTW with 

./configure --prefix=$HOME/gr --enable-single --enable-shared

and wxPython-src-2.5.4.1.tar.gz

under Red Hat FC 3 with all updates (using up2date) and it now runs all 
the gnuradio-examples

It looks like there is some sort of problem in libfftw3f with the SSE
instructions.  I'm not sure why.  I thought the SSE would run on a stock
P4 processor.

Since there seems to be a number of installation and setup issues, I'm 
going to post a complete set of build and setup instructions for GNU radio 
stuff later this week.  I'll include all the build scripts and 
instructions to get the complete system working under FC3.

On a side note, the graphical stuff is pretty nice.  It is great to get a 
live FFT of the what the USRP is seeing of a down converter.



On Sun, 3 Apr 2005, Sachi wrote:

> Hi, Eric
> 
> Toby's suggestion helped me solve the problem. If I
> configure "without" the --enable-sse option, then
> everything works well. Is --enable-sse option
> necessary here?
> 
> Thanks to you guys
> 
> Sachi
> 
> --- Eric Blossom <address@hidden> wrote:
> > On Sat, Apr 02, 2005 at 11:03:48PM -0800, Sachi
> > wrote:
> > > Hi, Eric
> > > 
> > > I have checked it with gdb, it returned:
> > > 
> > > (gdb) continue
> > > Continuing.
> > > 
> > > Program received signal SIGSEGV, Segmentation
> > fault.
> > > [Switching to Thread -1208514880 (LWP 1030)]
> > > 0x007eb73f in m2fv_64_0 () from
> > > /usr/local/lib/libfftw3f.so.3
> > > 
> > > Then gdb stopped. I didn't use any breakpoints in
> > the
> > > code. BTW: I can run the demos provided by
> > wxPython.
> > > 
> > > Can you sqeeze any information from this? Or what
> > > should I do next?
> > > Thanks for your time
> > > Sachi
> > 
> > This is good info.  It's blowing up libfftw3f, the
> > FFTW code.
> > Haven't ever seen that failure.
> > 
> > I'd suggest building fftw from source (www.fftw.org)
> > using the
> > --enable-single --enable-sse --enable-shared
> > configure options, and
> > then after it's built make sure that its "make
> > check" passes.
> > 
> > If this fixes the problem, there may be a problem
> > with the libfftw3f
> > library distributed with FC3.
> > 
> > Eric
> > 
> 
> 
>               
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